Oof indeed.
So, i discontinued work for normal sprites in 14_tiles2…png just scroll down and see where tiles stop. Add your new tiles there.
In tilesetconfig find id “atlatl” i keep adding tiles before it for easy access.
To edit tileset you will need graphical editing tool (i recomend Aseprite) and notepad++.
All tiles without the graphics can be found in config/debug.log
Bind “Reload Tileset” key, press it, then open the file. It will show you all objects, creatures and other id’s without graphics at the bottom of the file.